code cleaning using model view view model for login form












0












$begingroup$


model cs



public class Register_person: INotifyPropertyChanged


{



public event PropertyChangedEventHandler PropertyChanged;
public string _username;
public string _email;
[AutoIncrement,PrimaryKey]
public int Id { get; set; }

public string UserName { get
{
return _username;
} set {

_username = value;
NotifyPropertyChanged();

} }
public string Password { get; set; }
public string ConfirmPassword { get; set; }
public string Email { get {
return _email;
} set {
_email = value;
NotifyPropertyChanged();

} }

public Register_person()
{

}


database.cs



   public class Database


{
private SQLiteConnection Conn;



public Database()
{
Conn= DependencyService.Get<ISQLite>().GetConnection();
Conn.CreateTable<Register_person>();

}
public void AddUsers(Register_person users)
{
Conn.Insert(users);
}
public IEnumerable<Register_person> Getdata()
{
return (from t in Conn.Table<Register_person>() select t).ToList();
}
public Register_person GetEmail(string mail)
{
return Conn.Table<Register_person>().FirstOrDefault(t => t.Email == mail);
}
public Register_person GetUsername(string mail1)
{
return Conn.Table<Register_person>().FirstOrDefault(t => t.UserName == mail1);
}


}



login page code behind



 private void Login_Clicked(object sender, EventArgs e)
{
try
{
db2 = new Database();
var data = db2.Getdata();
var data1 = data.Where(x => x.UserName == Username.Text && x.Password == Password.Text).FirstOrDefault();

if (data1.UserName == Username.Text && data1.Password == Password.Text)
{
Navigation.PushAsync(new Homepage());
}



}
catch (Exception ex)
{

if (string.IsNullOrWhiteSpace(Username.Text) || string.IsNullOrWhiteSpace(Password.Text))
{
userlabel.IsVisible = false;
passwordlabel.IsVisible = false;
userlabel1.IsVisible = true;
passwordlabel1.IsVisible = true;

}
else
{
userlabel1.IsVisible = false;
passwordlabel1.IsVisible = false;
userlabel.IsVisible = true;
passwordlabel.IsVisible = true;
Password.Text = "";
Forgetpasswordlabel.IsVisible = true;
}
}
}


register page code behind



  private async void Registerbutton_Clicked(object sender, EventArgs e)
{
users = new Register_person();
db1 = new Database();
useUsername = Username.Text;
useEmail = REmailEntry.Text;
var data1 = db1.GetUsername(useUsername);
var data = db1.GetEmail(useEmail);
var passwor = RpasswordEntry.Text;
var passwordRegex = @"^(?=.*[A-Za-z])(?=.*d)(?=.*[$@$!%*#?&])[A-Za-zd$@$!%*#?&]{8,}$";
var email = REmailEntry.Text;
var emailPattern = @"^([a-zA-Z0-9_-.]+)@([a-zA-Z0-9_-.]+).([a-zA-Z]{2,5})$";


if (data == null)
{
REmail3.IsVisible = false;
if (data1 == null)
{
Rusername.IsVisible = false;

if (string.IsNullOrWhiteSpace(Username.Text) && string.IsNullOrWhiteSpace(RpasswordEntry.Text) && string.IsNullOrWhiteSpace(RcpasswordEntry.Text) && string.IsNullOrWhiteSpace(REmailEntry.Text))
{
await DisplayAlert("Message", "Please Fill all the fields", "ok", "cancel");
}
else if (string.IsNullOrWhiteSpace(Username.Text))
{
Rusername2.IsVisible = true;
}
else if (string.IsNullOrWhiteSpace(RpasswordEntry.Text))
{
Rpassword2.IsVisible = true;
RcpasswordEntry.Text = "";
}
else if (string.IsNullOrWhiteSpace(RcpasswordEntry.Text))
{
RCpassword2.IsVisible = true;
}
else if (string.IsNullOrWhiteSpace(REmailEntry.Text))
{
REmail2.IsVisible = true;
}


else
{
if (Regex.IsMatch(email, emailPattern))
{
if (Regex.IsMatch(passwor, passwordRegex))
{
if (RpasswordEntry.Text != RcpasswordEntry.Text)
{
RCpassword.IsVisible = true;
RcpasswordEntry.Text = "";
}
else
{
users.UserName = Username.Text;
users.Password = RpasswordEntry.Text;
users.ConfirmPassword = RcpasswordEntry.Text;
users.Email = REmailEntry.Text;



db1.AddUsers(users);

await Navigation.PushAsync(new MainPage());
}
}
else
{
Rpassword.IsVisible = true;
}
}

else
{
REmail.IsVisible = true;
}
}
}
else
{
Rusername.IsVisible = true;
}
}
else
{
REmail3.IsVisible = true;
}
}


database code



i need to convert this code for model view viem model and clean up the codes. i am new to xamarin forms.this project use nuget package sq lite.i tried use of Icommand but i cannot really understand where to put i command.i really did not get how to navigate with pages.where i need to bind my data and how









share







New contributor




lak1104 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.







$endgroup$

















    0












    $begingroup$


    model cs



    public class Register_person: INotifyPropertyChanged


    {



    public event PropertyChangedEventHandler PropertyChanged;
    public string _username;
    public string _email;
    [AutoIncrement,PrimaryKey]
    public int Id { get; set; }

    public string UserName { get
    {
    return _username;
    } set {

    _username = value;
    NotifyPropertyChanged();

    } }
    public string Password { get; set; }
    public string ConfirmPassword { get; set; }
    public string Email { get {
    return _email;
    } set {
    _email = value;
    NotifyPropertyChanged();

    } }

    public Register_person()
    {

    }


    database.cs



       public class Database


    {
    private SQLiteConnection Conn;



    public Database()
    {
    Conn= DependencyService.Get<ISQLite>().GetConnection();
    Conn.CreateTable<Register_person>();

    }
    public void AddUsers(Register_person users)
    {
    Conn.Insert(users);
    }
    public IEnumerable<Register_person> Getdata()
    {
    return (from t in Conn.Table<Register_person>() select t).ToList();
    }
    public Register_person GetEmail(string mail)
    {
    return Conn.Table<Register_person>().FirstOrDefault(t => t.Email == mail);
    }
    public Register_person GetUsername(string mail1)
    {
    return Conn.Table<Register_person>().FirstOrDefault(t => t.UserName == mail1);
    }


    }



    login page code behind



     private void Login_Clicked(object sender, EventArgs e)
    {
    try
    {
    db2 = new Database();
    var data = db2.Getdata();
    var data1 = data.Where(x => x.UserName == Username.Text && x.Password == Password.Text).FirstOrDefault();

    if (data1.UserName == Username.Text && data1.Password == Password.Text)
    {
    Navigation.PushAsync(new Homepage());
    }



    }
    catch (Exception ex)
    {

    if (string.IsNullOrWhiteSpace(Username.Text) || string.IsNullOrWhiteSpace(Password.Text))
    {
    userlabel.IsVisible = false;
    passwordlabel.IsVisible = false;
    userlabel1.IsVisible = true;
    passwordlabel1.IsVisible = true;

    }
    else
    {
    userlabel1.IsVisible = false;
    passwordlabel1.IsVisible = false;
    userlabel.IsVisible = true;
    passwordlabel.IsVisible = true;
    Password.Text = "";
    Forgetpasswordlabel.IsVisible = true;
    }
    }
    }


    register page code behind



      private async void Registerbutton_Clicked(object sender, EventArgs e)
    {
    users = new Register_person();
    db1 = new Database();
    useUsername = Username.Text;
    useEmail = REmailEntry.Text;
    var data1 = db1.GetUsername(useUsername);
    var data = db1.GetEmail(useEmail);
    var passwor = RpasswordEntry.Text;
    var passwordRegex = @"^(?=.*[A-Za-z])(?=.*d)(?=.*[$@$!%*#?&])[A-Za-zd$@$!%*#?&]{8,}$";
    var email = REmailEntry.Text;
    var emailPattern = @"^([a-zA-Z0-9_-.]+)@([a-zA-Z0-9_-.]+).([a-zA-Z]{2,5})$";


    if (data == null)
    {
    REmail3.IsVisible = false;
    if (data1 == null)
    {
    Rusername.IsVisible = false;

    if (string.IsNullOrWhiteSpace(Username.Text) && string.IsNullOrWhiteSpace(RpasswordEntry.Text) && string.IsNullOrWhiteSpace(RcpasswordEntry.Text) && string.IsNullOrWhiteSpace(REmailEntry.Text))
    {
    await DisplayAlert("Message", "Please Fill all the fields", "ok", "cancel");
    }
    else if (string.IsNullOrWhiteSpace(Username.Text))
    {
    Rusername2.IsVisible = true;
    }
    else if (string.IsNullOrWhiteSpace(RpasswordEntry.Text))
    {
    Rpassword2.IsVisible = true;
    RcpasswordEntry.Text = "";
    }
    else if (string.IsNullOrWhiteSpace(RcpasswordEntry.Text))
    {
    RCpassword2.IsVisible = true;
    }
    else if (string.IsNullOrWhiteSpace(REmailEntry.Text))
    {
    REmail2.IsVisible = true;
    }


    else
    {
    if (Regex.IsMatch(email, emailPattern))
    {
    if (Regex.IsMatch(passwor, passwordRegex))
    {
    if (RpasswordEntry.Text != RcpasswordEntry.Text)
    {
    RCpassword.IsVisible = true;
    RcpasswordEntry.Text = "";
    }
    else
    {
    users.UserName = Username.Text;
    users.Password = RpasswordEntry.Text;
    users.ConfirmPassword = RcpasswordEntry.Text;
    users.Email = REmailEntry.Text;



    db1.AddUsers(users);

    await Navigation.PushAsync(new MainPage());
    }
    }
    else
    {
    Rpassword.IsVisible = true;
    }
    }

    else
    {
    REmail.IsVisible = true;
    }
    }
    }
    else
    {
    Rusername.IsVisible = true;
    }
    }
    else
    {
    REmail3.IsVisible = true;
    }
    }


    database code



    i need to convert this code for model view viem model and clean up the codes. i am new to xamarin forms.this project use nuget package sq lite.i tried use of Icommand but i cannot really understand where to put i command.i really did not get how to navigate with pages.where i need to bind my data and how









    share







    New contributor




    lak1104 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
    Check out our Code of Conduct.







    $endgroup$















      0












      0








      0





      $begingroup$


      model cs



      public class Register_person: INotifyPropertyChanged


      {



      public event PropertyChangedEventHandler PropertyChanged;
      public string _username;
      public string _email;
      [AutoIncrement,PrimaryKey]
      public int Id { get; set; }

      public string UserName { get
      {
      return _username;
      } set {

      _username = value;
      NotifyPropertyChanged();

      } }
      public string Password { get; set; }
      public string ConfirmPassword { get; set; }
      public string Email { get {
      return _email;
      } set {
      _email = value;
      NotifyPropertyChanged();

      } }

      public Register_person()
      {

      }


      database.cs



         public class Database


      {
      private SQLiteConnection Conn;



      public Database()
      {
      Conn= DependencyService.Get<ISQLite>().GetConnection();
      Conn.CreateTable<Register_person>();

      }
      public void AddUsers(Register_person users)
      {
      Conn.Insert(users);
      }
      public IEnumerable<Register_person> Getdata()
      {
      return (from t in Conn.Table<Register_person>() select t).ToList();
      }
      public Register_person GetEmail(string mail)
      {
      return Conn.Table<Register_person>().FirstOrDefault(t => t.Email == mail);
      }
      public Register_person GetUsername(string mail1)
      {
      return Conn.Table<Register_person>().FirstOrDefault(t => t.UserName == mail1);
      }


      }



      login page code behind



       private void Login_Clicked(object sender, EventArgs e)
      {
      try
      {
      db2 = new Database();
      var data = db2.Getdata();
      var data1 = data.Where(x => x.UserName == Username.Text && x.Password == Password.Text).FirstOrDefault();

      if (data1.UserName == Username.Text && data1.Password == Password.Text)
      {
      Navigation.PushAsync(new Homepage());
      }



      }
      catch (Exception ex)
      {

      if (string.IsNullOrWhiteSpace(Username.Text) || string.IsNullOrWhiteSpace(Password.Text))
      {
      userlabel.IsVisible = false;
      passwordlabel.IsVisible = false;
      userlabel1.IsVisible = true;
      passwordlabel1.IsVisible = true;

      }
      else
      {
      userlabel1.IsVisible = false;
      passwordlabel1.IsVisible = false;
      userlabel.IsVisible = true;
      passwordlabel.IsVisible = true;
      Password.Text = "";
      Forgetpasswordlabel.IsVisible = true;
      }
      }
      }


      register page code behind



        private async void Registerbutton_Clicked(object sender, EventArgs e)
      {
      users = new Register_person();
      db1 = new Database();
      useUsername = Username.Text;
      useEmail = REmailEntry.Text;
      var data1 = db1.GetUsername(useUsername);
      var data = db1.GetEmail(useEmail);
      var passwor = RpasswordEntry.Text;
      var passwordRegex = @"^(?=.*[A-Za-z])(?=.*d)(?=.*[$@$!%*#?&])[A-Za-zd$@$!%*#?&]{8,}$";
      var email = REmailEntry.Text;
      var emailPattern = @"^([a-zA-Z0-9_-.]+)@([a-zA-Z0-9_-.]+).([a-zA-Z]{2,5})$";


      if (data == null)
      {
      REmail3.IsVisible = false;
      if (data1 == null)
      {
      Rusername.IsVisible = false;

      if (string.IsNullOrWhiteSpace(Username.Text) && string.IsNullOrWhiteSpace(RpasswordEntry.Text) && string.IsNullOrWhiteSpace(RcpasswordEntry.Text) && string.IsNullOrWhiteSpace(REmailEntry.Text))
      {
      await DisplayAlert("Message", "Please Fill all the fields", "ok", "cancel");
      }
      else if (string.IsNullOrWhiteSpace(Username.Text))
      {
      Rusername2.IsVisible = true;
      }
      else if (string.IsNullOrWhiteSpace(RpasswordEntry.Text))
      {
      Rpassword2.IsVisible = true;
      RcpasswordEntry.Text = "";
      }
      else if (string.IsNullOrWhiteSpace(RcpasswordEntry.Text))
      {
      RCpassword2.IsVisible = true;
      }
      else if (string.IsNullOrWhiteSpace(REmailEntry.Text))
      {
      REmail2.IsVisible = true;
      }


      else
      {
      if (Regex.IsMatch(email, emailPattern))
      {
      if (Regex.IsMatch(passwor, passwordRegex))
      {
      if (RpasswordEntry.Text != RcpasswordEntry.Text)
      {
      RCpassword.IsVisible = true;
      RcpasswordEntry.Text = "";
      }
      else
      {
      users.UserName = Username.Text;
      users.Password = RpasswordEntry.Text;
      users.ConfirmPassword = RcpasswordEntry.Text;
      users.Email = REmailEntry.Text;



      db1.AddUsers(users);

      await Navigation.PushAsync(new MainPage());
      }
      }
      else
      {
      Rpassword.IsVisible = true;
      }
      }

      else
      {
      REmail.IsVisible = true;
      }
      }
      }
      else
      {
      Rusername.IsVisible = true;
      }
      }
      else
      {
      REmail3.IsVisible = true;
      }
      }


      database code



      i need to convert this code for model view viem model and clean up the codes. i am new to xamarin forms.this project use nuget package sq lite.i tried use of Icommand but i cannot really understand where to put i command.i really did not get how to navigate with pages.where i need to bind my data and how









      share







      New contributor




      lak1104 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.







      $endgroup$




      model cs



      public class Register_person: INotifyPropertyChanged


      {



      public event PropertyChangedEventHandler PropertyChanged;
      public string _username;
      public string _email;
      [AutoIncrement,PrimaryKey]
      public int Id { get; set; }

      public string UserName { get
      {
      return _username;
      } set {

      _username = value;
      NotifyPropertyChanged();

      } }
      public string Password { get; set; }
      public string ConfirmPassword { get; set; }
      public string Email { get {
      return _email;
      } set {
      _email = value;
      NotifyPropertyChanged();

      } }

      public Register_person()
      {

      }


      database.cs



         public class Database


      {
      private SQLiteConnection Conn;



      public Database()
      {
      Conn= DependencyService.Get<ISQLite>().GetConnection();
      Conn.CreateTable<Register_person>();

      }
      public void AddUsers(Register_person users)
      {
      Conn.Insert(users);
      }
      public IEnumerable<Register_person> Getdata()
      {
      return (from t in Conn.Table<Register_person>() select t).ToList();
      }
      public Register_person GetEmail(string mail)
      {
      return Conn.Table<Register_person>().FirstOrDefault(t => t.Email == mail);
      }
      public Register_person GetUsername(string mail1)
      {
      return Conn.Table<Register_person>().FirstOrDefault(t => t.UserName == mail1);
      }


      }



      login page code behind



       private void Login_Clicked(object sender, EventArgs e)
      {
      try
      {
      db2 = new Database();
      var data = db2.Getdata();
      var data1 = data.Where(x => x.UserName == Username.Text && x.Password == Password.Text).FirstOrDefault();

      if (data1.UserName == Username.Text && data1.Password == Password.Text)
      {
      Navigation.PushAsync(new Homepage());
      }



      }
      catch (Exception ex)
      {

      if (string.IsNullOrWhiteSpace(Username.Text) || string.IsNullOrWhiteSpace(Password.Text))
      {
      userlabel.IsVisible = false;
      passwordlabel.IsVisible = false;
      userlabel1.IsVisible = true;
      passwordlabel1.IsVisible = true;

      }
      else
      {
      userlabel1.IsVisible = false;
      passwordlabel1.IsVisible = false;
      userlabel.IsVisible = true;
      passwordlabel.IsVisible = true;
      Password.Text = "";
      Forgetpasswordlabel.IsVisible = true;
      }
      }
      }


      register page code behind



        private async void Registerbutton_Clicked(object sender, EventArgs e)
      {
      users = new Register_person();
      db1 = new Database();
      useUsername = Username.Text;
      useEmail = REmailEntry.Text;
      var data1 = db1.GetUsername(useUsername);
      var data = db1.GetEmail(useEmail);
      var passwor = RpasswordEntry.Text;
      var passwordRegex = @"^(?=.*[A-Za-z])(?=.*d)(?=.*[$@$!%*#?&])[A-Za-zd$@$!%*#?&]{8,}$";
      var email = REmailEntry.Text;
      var emailPattern = @"^([a-zA-Z0-9_-.]+)@([a-zA-Z0-9_-.]+).([a-zA-Z]{2,5})$";


      if (data == null)
      {
      REmail3.IsVisible = false;
      if (data1 == null)
      {
      Rusername.IsVisible = false;

      if (string.IsNullOrWhiteSpace(Username.Text) && string.IsNullOrWhiteSpace(RpasswordEntry.Text) && string.IsNullOrWhiteSpace(RcpasswordEntry.Text) && string.IsNullOrWhiteSpace(REmailEntry.Text))
      {
      await DisplayAlert("Message", "Please Fill all the fields", "ok", "cancel");
      }
      else if (string.IsNullOrWhiteSpace(Username.Text))
      {
      Rusername2.IsVisible = true;
      }
      else if (string.IsNullOrWhiteSpace(RpasswordEntry.Text))
      {
      Rpassword2.IsVisible = true;
      RcpasswordEntry.Text = "";
      }
      else if (string.IsNullOrWhiteSpace(RcpasswordEntry.Text))
      {
      RCpassword2.IsVisible = true;
      }
      else if (string.IsNullOrWhiteSpace(REmailEntry.Text))
      {
      REmail2.IsVisible = true;
      }


      else
      {
      if (Regex.IsMatch(email, emailPattern))
      {
      if (Regex.IsMatch(passwor, passwordRegex))
      {
      if (RpasswordEntry.Text != RcpasswordEntry.Text)
      {
      RCpassword.IsVisible = true;
      RcpasswordEntry.Text = "";
      }
      else
      {
      users.UserName = Username.Text;
      users.Password = RpasswordEntry.Text;
      users.ConfirmPassword = RcpasswordEntry.Text;
      users.Email = REmailEntry.Text;



      db1.AddUsers(users);

      await Navigation.PushAsync(new MainPage());
      }
      }
      else
      {
      Rpassword.IsVisible = true;
      }
      }

      else
      {
      REmail.IsVisible = true;
      }
      }
      }
      else
      {
      Rusername.IsVisible = true;
      }
      }
      else
      {
      REmail3.IsVisible = true;
      }
      }


      database code



      i need to convert this code for model view viem model and clean up the codes. i am new to xamarin forms.this project use nuget package sq lite.i tried use of Icommand but i cannot really understand where to put i command.i really did not get how to navigate with pages.where i need to bind my data and how







      mvvm xamarin





      share







      New contributor




      lak1104 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.










      share







      New contributor




      lak1104 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.








      share



      share






      New contributor




      lak1104 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.









      asked 5 mins ago









      lak1104lak1104

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      New contributor




      lak1104 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.





      New contributor





      lak1104 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.






      lak1104 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.






















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